diff --git a/src/Example/Program.cs b/src/Example/Program.cs
index c74bd2a..1a6ddf5 100644
--- a/src/Example/Program.cs
+++ b/src/Example/Program.cs
@@ -74,13 +74,22 @@ static void Main(string[] args)
                 connection.ChangeDatabase("IoTSharp");
                 connection.CreateCommand("CREATE TABLE IF NOT EXISTS telemetrydata  (ts timestamp,value_type  tinyint, value_boolean bool, value_string binary(10240), value_long bigint,value_datetime timestamp,value_double double)   TAGS (deviceid binary(32),keyname binary(64));").ExecuteNonQuery();
                 //connection.CreateCommand($"CREATE TABLE dev_Thermometer USING telemetrydata TAGS (\"Temperature\")").ExecuteNonQuery();
-                var devid = $"{Guid.NewGuid():N}";
-                UploadTelemetryData(connection, devid, "Temperature", 999);
-                UploadTelemetryData(connection,devid,   "Humidity", 888);
+                var devid1 = $"{Guid.NewGuid():N}";
                 var devid2 = $"{Guid.NewGuid():N}";
-                UploadTelemetryData(connection, devid2, "Temperature", 777);
-                UploadTelemetryData(connection, devid2, "Humidity", 666);
+                UploadTelemetryData(connection, devid1, "1#air-compressor-two-level-discharge-temperature", 2000);
+                UploadTelemetryData(connection, devid2, "1#air-compressor-load-rate", 2000);
                 var reader2 = connection.CreateCommand("select last_row(*) from telemetrydata group by deviceid,keyname ;").ExecuteReader();
+                var reader3 = connection.CreateCommand("select * from telemetrydata").ExecuteReader();
+
+                List<string> list = new List<string>();
+                while (reader3.Read())
+                {
+                    list.Add(reader3.GetString("keyname"));
+                }
+
+                var k = list.GroupBy(e => e);
+                var dic = k.ToDictionary(en => en.Key, en => en.ToList());
+
                 ConsoleTableBuilder.From(reader2.ToDataTable()).WithFormat(ConsoleTableBuilderFormat.Default).ExportAndWriteLine();
                
 
@@ -117,11 +126,12 @@ static void Main(string[] args)
 
         }
 
+
         static void UploadTelemetryData(  TaosConnection connection, string devid, string keyname, int count)
         {
             for (int i = 0; i < count; i++)
             {
-                connection.CreateCommand($"INSERT INTO device_{devid}_{keyname} USING telemetrydata TAGS(\"{devid}\",\"{keyname}\")  (ts,value_type,value_long) values (now,2,{i});").ExecuteNonQuery();
+                connection.CreateCommand($"INSERT INTO device_{devid} USING telemetrydata TAGS(\"{devid}\",\"{keyname}\")  (ts,value_type,value_long) values (now,2,{i});").ExecuteNonQuery();
             }
         }
     }
diff --git a/src/Maikebing.Data.Taos/Maikebing.Data.Taos.csproj b/src/Maikebing.Data.Taos/Maikebing.Data.Taos.csproj
index b6e15b0..f6b359a 100644
--- a/src/Maikebing.Data.Taos/Maikebing.Data.Taos.csproj
+++ b/src/Maikebing.Data.Taos/Maikebing.Data.Taos.csproj
@@ -16,7 +16,7 @@
 			Maikebing.Data.Taos.TaosParameter
 			Maikebing.Data.Taos.TaosTransaction
 		</Description>
-		<TargetFrameworks>net5;netstandard2.0;net45</TargetFrameworks>
+		<TargetFrameworks>net5;netstandard2.0</TargetFrameworks>
 
 		<PackageTags>Taos;Data;ADO.NET;Entity Framework,;EF; Core;Data O/RM,;entity-framework-core;TDengine</PackageTags>